A chloride nitride is a mixed anion compound containing both chloride (Cl<sup>âÂÂ</sup>) and nitride ions (N<sup>3âÂÂ</sup>). Another name is metallochloronitrides. They are a subclass of halide nitrides or pnictide halides.
The group 4 element chloride nitrides can be intercalated by alkali metals that supply extra electrons, and other molecules such as from solvents like tetrahydrofuran, yielding layered substances that are superconductors. A superconductor transition temperature T<sub>c</sub> of 25.5K has been achieved.
Nitride chlorides may be produced by heating metal nitrides with metal chlorides. The ammonolysis process heats a metal chloride with ammonia. A related method heats a metal or metal hydride with ammonium chloride. The nitrogen source could also be an azide or an amide.